In all simulation configurations, we used a non-reactive rock content of 14% with a density of 3630 kg m\(^{-3}\)  like the earlier studies [1]}. In each case, the olivine water ratio was taken as 0.12, which corresponds to the assumed rock-water ratio of 42:58 in TNOs. The calculations are performed with the size-dependent porosity (Eq. REF .), the initial temperature is calculated from the accretion heat (Eq. REF .), and we choose a time step of 0.5 yr and a layer thickness of 20 km. The starting time t = 0 was considered to be the end of the accretion.
